Drawing-press.



No. 837,669. PATENTED DEC. 4, 1906 0. S. BEYER.

DRAWING PRESS. APPLICATION FILED DEG.16,1903.

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No. 837,659. PATENTED 1130.4, 1906.

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APPLICATION FILED D36. 18, 1908.

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No. 887,659. PATENTED DEC. 4, 1906. 0.S.BEYER.

DRAWING PRESS.

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No. 837,659. PATENTED DEC, 4, 1906.

' O.S.BEYER.

DRAWING PRESS.

APPLICATION rnsn DHO.16,1903.

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UNITED STATES PATENT OFFICE.

OTTO S. BEYER, OF EAST RUTHERFORD, NEW JERSEY, ASSIGNOR TO E. W. BLISS COMPANY, A CORPORATION OF WEST VIRGINIA.

DRAWING-PRESS- Specification of Letters Patent.

Patented Dec. 4, 1906.

Application filed December 16, 1903. Serial No. 185,345.

To all whom it may concern:

Be it known that I, OTTO S. BEYER, a citizen of the United States of America, and a resident of East Rutherford, county of Bergen, and State of New Jersey, have invented certain new and useful Improvements in Drawing-Presses, of which the following is a specification.

My invention has reference to drawingpresses for drawing a sheet of'metal up into cup-shaped articles. In presses of'this kind there are generally three main elements namely, a bed which carries the die, a punch, and a blank-holder.

The general construction of these presses is well known and has been developed along two distinct typesone in which the bed carrying the die is stationary while the blankholder and punch are given a motion toward and away from the said bed and die. The

other type, and the one to which my invention relates, is a construction in which the blank-holder is stationary while the bed carrying the die and the punch are movable toward and away from each other. Simple as this operation seems it presents numerous mechanical difliculties, especially when it is desired to draw up very large and deep articles at a high speed. It is obvious that when a shallow article is drawn up the distance that the elements have to separate from each other is not so very great but when it comes to drawing up very deep cup-shaped articles the distance through which the parts have to travel without performing any work becomes very great. It will be understood that in order to withdraw the blank after it has been acted upon it is necessary to move the punch and bed away from each other a distance slightly greater than the depth of the blank which has been drawn. In order to obtain the greatest speed in turning out work, it is preferred to have a machine which is con tinuously operating, one article being drawn up with each revolution of the main shaft. In order to do this and to withdraw the finished blank and to replace it with another one, it is necessary that there should be a pause or dwell in this instance of the bed during a considerable periodin fact, twice during one hundred and twenty degrees of each revolution of the main shaft. Various means have been devised for accomplishing this object; but heretofore the result has been somewhat disappointing, inasmuch as the general construction of the machine, though ingenious, has been complicated, and therefore cumbersome to operate and to maintain in good working order, besides being wasteful through the loss of power and the straining of the parts of the machine.

My invention does not contemplate, broadly, to embody the principle above, as that is old, but seeks, rather, to overcome the mechanical difficulties encountered in the building of machinery of this kind, so that the organization of the machine shall be free from the imperfection and crudeness characteristic of machines heretofore constructed.

Other improvements will appear as the specification proceeds.

In the accompanying drawings I have shown my invention in two forms, though I do not wish to be understood as limiting my invention to the exact structure therein set forth.

In the said drawings, Figure 1 is an end view of the machine embodying my invention. Fig. 2 is a side elevation of Fig. 1. Fig. 3 is an enlarged view of substantially all the parts shown in Fig. 1 and partly in section. Fig. 4 is a sectional view on the line a: w of Fig. 3. Fig. 5' is a diagram illustrating the movements of the parts comprising my machine. Fig. 6 is a detail view of the means for adjusting the blank-holder. Fig. 7 is a large view of the cams for operating the toggles used in elevating the bed. Fig. 8 is a sectional View on the line y y of Fig. 2.

Similar characters of reference indicate corresponding parts in the different views.

1 represents a framework of any suitable construction for properly supporting the parts.

2 represents the bed carrying the die 3.

4 is the blank-holder, and 5 is the punch.

As has been previously noted in this instance, the bed and punch are movable, while the blank-holder is stationary.

The means for operating the bed are as follows: Mounted in the framework is a main shaft 6, carrying the driving-gears 7, one on either side of the machine, as shown. L0- cated in each of said gears or otherwise moving with the same is a cam 8, with which engage the rollers 9, one on each of the two cranlcshafts 10 and at opposite ends to each other, so that one crank-shaft is operated straps 13 on the said driving gea-rs.

from one of thed-riving-gears, whilethe other crank-shaft is operated from the other of the said driving-gears. The said crank-shafts extend parallel to the main shaft 6.

11 and l 1 indicate the links of toggles connecting the bed and crank-shafts 10, so as to impart the motion of the cams and rollers to V is suitably operated from the steam-engine 17 or from some other suitable-motor.

It will be observed from an inspection of Figs. 5 and 7 that the punch travels constantly during one revolution of the drivinggear 7', whereas'the bed travels upward during sixty degrees, then dwells for one hundied and twenty degrees while the drawing is eifected, then moves downward during sixty degrees and dwells at its lowermost point during the remaining one hundred'and twenty degrees. The'two cams in the gears 7 "are shown diagrammatically in Fig. 7, and the pitted curve showing the movement of the bed and punch is illustrated in Fig. 5.

. It will be observed that by this construction the strain on the machine is distributed evenly, while at the-same time the operating mechanism is simplified to a very considerable extent.

Suitable means are of course provided for adjusting the stationary blank-holder, taking the form in this instance of threaded spindles 18, having the internally-screwthreaded worm-Wheels 19 mounted on the same adapted to engage with the worms 20, mounted on the shaft 21, carrying the bevelgear 22", engaging with another gear 23, mounted on the shaft 24, having at its upper end another gear 25, engaging with the bevelgear 26, attached to the handle 27. At the lower end of the shaft 2 1 is another bevel gear 2'8, engaging with the bevel-gear 29, mounted on the horizontal shaft 30 and car'- rying at its other end the bevel-gear 31, en-

" gaging with the bevel-gear 32, mounted on the shaft 33, similar to the shaft 2 1, from whence the motion is transmitted to the other to adjust the said blanl -holder by power,

and to this end I provide an additional gear 34, meshing with the gear 31, mounted on the shaft 35, operated from the pulley 36,which in turn is capable of being operated from the steam-engine 17 or one of the gears driven by the same. In practice the approximate adjustment will be made by means of power, while the final and nice adjustment will be made by hand. Suitable means are also provided for adjusting the punch, consisting, in the present instance, of a hand-wheel 37, acting through a train of bevel-gears (denoted by 38 and 38) up to the pinion '39 and gear 40, mounted on the threaded spindle 41,

which by its rotation moves the sleeve 42 up or down, thereby adjusting the said punch.

VVhen a smaller and less heavy machine is used, I prefer to operate the bed from a single crank-shaft actuated by two cams, one on each side of the machine. Such a construction is shown and claimed in a companion application filed by me on the 18th day of January, 1905, Serial No. 241,553.

Having thus described my invention, what I claim is e 1. In a drawing-press, the combination of a bed carrying a die, a blanleholder, and a punch, means for operating the said bed co1nprising: a driving-gear located on each side of the machine, two crank-shafts, a cam moving with each of the said driving-gears, a roller mounted on each of said crank-shafts and at opposite ends, one of said rollers engaging with one ofsaid cams in the gear on one side of the machine and the other of said rollers engaging with the cam in the gear on the other side of the machine, and toggles connecting the said crank-shafts with the said bed.

2. In a drawing-press, the combination of a bed carrying a die, a blank-holder, and a punch, means for operating the said bed comprising: a driving-gear located on each side of the machine, two crank-shafts, acam moving with each. of said driving-gears, a roller mounted on each of said crank-shafts and at opposite ends, one of said rollers engaging with one ofsaid cams in the gear on one side of the machine and the other of said rollers engaging with the camin the gear on the other side of the machine, toggles connecting the said crank-shafts-with the said bed, and means for operating the said drivinggears continuously.

3. In a drawing-press, the combination of a bed carryin a die, a blank-holder, and a punch, means for operating the said bed comprising: a driving-gear located on each side of the machine, two crank-shafts, a cam moving with each of said driving gears, a roller mounted on each of said crank-shafts and at opposite ends, one of said rollers engaging with one of said cams in the gear on one side of the machine and the other of saidrollers engaging 4. In a drawing-press, the combination of a bed carrying a die, a blank-holder, and a punch, means for operating the said bed comprising: a driving-gear located on each side of the machine, two crank-shafts, a cam moving with each of said driving-gears, a roller mounted on each of said crank-shafts and at opposite ends, one of said rollers engaging with one of said cams in the gear on one side of the machine and the other of said rollers engaging with the cam in the gear on the other side of the machine, toggles connecting the said crank-sliafts with the said bed, and means connecting the said drivinggears with the punch located one on' either side of the machine, and means for operating the said driving-gears continuously.

5. In a drawing-press, the combination of a bed carrying a die, a blank-holder, and a punch, means for operating the said bed comprising: a driving-gear located on each side of the machine, two crank-shafts, a cam moving with each of the said driving-gears, a roller mounted on each of said crank-shafts and at opposite ends, one of said rollers engaging with one of said cams in the gear on one side of the machine and the other of said rollers engaging with the cam in the gear on the other side of the machine, and toggles connecting the said crank-shafts with the said bed, the parts being so arranged that to each revolution of the driving gears the punch is given a constant up-and-down motion while the bed moves up during sixty degrees, then dwells for one hundred and twenty degrees, then moves down again during sixty degrees, and dwells at its lowermost point during one hundred and twenty degrees of each revolution of the said gears.

6. In a drawing-press, the combination of a bed carrying a die, a blank-holder, and a punch, means for operating the said bed comprising: a drivingear located on each side of the machine, two crankshafts, a cam moving with each of said driving-gears, a roller mounted on each of said crank-shafts and at opposite ends, one of said rollers engaging with one of said cams in the gear on one side of the machine and the other of said rollers engaging with the cam in the gear on the other side of the machine, toggles connecting the said crank-shafts with the said bed, and means for operating the said driving-gears continuously, the parts being so arranged that to each revolution of the driving-gears, the punch is given a constant up-and-down motion while the bed moves up during sixty degrees, then dwells for one hundred and twenty degrees, then moves down again during sixty degrees, and dwells at its lowermost point during one hundred and twenty degrees of each revolution of the said gears.

7. In a drawing-press, the combination of a bed carrying a die, a blank-holder, and a punch, means for operating the said bed comprising: a driving-gear located on each side of the machine, two cranlcshafts, a cam moving with each of said driving-gears, a roller mounted on each of said crank-shafts and at opposite ends, one of said rollers engaging with one of said cams in the gear on one side of the machine and the other of said rollers engaging with the cam in the gear on the other side of the machine, toggles connecting the said cranlcshafts with the bed, and means comiecting the said driving-gears with the punch located one on either side of the machine, the parts being so arranged that to each revolution of the driving-gears the punch is given a constant up-and-down motion while the bed moves up during sixty degrees, then dwells for one hundred and twenty degrees, then moves down again during sixty degrees, and dwells at its lowermost point during one hundred and twenty degrees of each revolution of the said gears.

8. In a drawing-press, the combination of a bed carrying a die, a blank-holder, and a punch, means for operating the said bed comprising: a driving-gear located on each side of the machine, two crank-shafts, a cam moving with each of said driving-gears, a roller mounted on each of saidcrank-shafts and at opposite ends, one of said rollers engaging with one of said cams in the gear on one side of the machine and the other of said rollers engaging with the cam in the gear on the other side of the machine, toggles connecting the said crank-shafts with the said bed, and means connecting the said driving-gears with the unch located one on either side of the macliine, and means for operating the said driving-gears continuously, the parts being so arranged that to each revolution of the driving-gears the punch is given aconstant up-and-down motion while the bed moves up during sixty degrees, then dwells for one hundred and twenty degrees, then moves down again during sixty degrees, and dwells at its lowermost point during one hundred and twenty degreesof each revolution of the said gears.

Signed at New York this 12th day of December, 1903.

OTTO S. BEYER.

I/Vitnesses: I

AxEL V. BEEKEN, E. H. TUCKER. 

